Sheep

Free to read here, from Project Gutenberg.

The Story of Wool

Sara Ware Bassett, also an audiobook

Sheep, Swine, and Poultry

Robert Jennings

A Treatise on Sheep:

Ambrose Blacklock

Total Per Cent Lambing Rules

Thomas Boylan

The Sheep and Lamb

Thomas Miller

Notes on Diseases of Swine, Sheep, Poultry and the Dog

Charles James Korinek